Stabil-trak™ system and boom interlock system – SkyTrak 8042 Service Manual User Manual
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10-5
6036, 6042, 8042, 10042, 10054
Stabil-TRAK™
System and Boom Interlock System
10.4
STABIL-TRAK ELECTRICAL CIRCUIT OPERATION AND TROUBLESHOOTING (6042,
8042 & 10042)
Note: Before using the 6042, 8042 and 10042
Stabil-TRAK System Troubleshooting chart and
diagrams, complete the Section 10.5, “Stabil-TRAK
System Test” to determine what part of the system is not
functioning properly.
Definitions:
PB = Park Brake
SB = Service Brake
DE = De-energized
E = Energized
C = Closed
O = Open
6042, 8042 and 10042 Stabil-TRAK System Troubleshooting
FREE PIVOT
MODE
SLOW PIVOT
MODE
LOCKED
MODE
Machine
Conditions
Switch/
Relay
Solenoid
Ignition On
Boom Below 40°
Boom Retracted
PB & SB Released
Trans. in Forward or Reverse
Ignition On
Boom Above 40°
Boom Extended
PB & SB Released
Trans. in Forward or Reverse
Ignition On
Boom Above 40°
Boom Extended
PB & SB Applied
& Trans. in Neutral
Solenoid 12A
E
DE
DE
Solenoid 12B
E
DE
DE
Solenoid 3
DE
DE
E
Solenoid 4A
DE
E
DE
Solenoid 4B
DE
E
DE
Boom Angle Sensor
C
O
O
Boom Switch Relay
E
DE
DE
Stabilizer Lock Relay
DE
DE
E
Stabilizer Light
OFF (DE)
OFF (DE)
ON (E)
Ignition Switch
C
C
C
Park Brake Switch
O
O
C
Service Brake Switch
O
O
C
Secondary Function Manifold
Park Brake Solenoids
E
E
DE
Park Brake Disengage Relay
E
E
DE
Neutral Start Relay
DE
DE
E